repetition

rep|eti|tion /r'epɪt'ɪʃən/ (repetitions)
1 [N-VAR] usu N of n
If there is a repetition of an event, usually an undesirable event, it happens again.
Today the city government has taken measures to prevent a repetition of last year's confrontation...
2 [N-VAR]
Repetition means using the same words again.
He could also have cut out much of the repetition and thus saved many pages.